312401143 has 2 divisors, whose sum is σ = 312401144. Its totient is φ = 312401142.

The previous prime is 312401107. The next prime is 312401147. The reversal of 312401143 is 341104213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312401143 - 2⁹ = 312400631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312401143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312401147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156200571 + 156200572.

It is an arithmetic number, because the mean of its divisors is an integer number (156200572).

Almost surely, 2^312401143 is an apocalyptic number.

312401143 is a deficient number, since it is larger than the sum of its proper divisors (1).

312401143 is an equidigital number, since it uses as much as digits as its factorization.

312401143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 312401143 is about 17674.8732102949. The cubic root of 312401143 is about 678.5328394866.

Adding to 312401143 its reverse (341104213), we get a palindrome (653505356).

The spelling of 312401143 in words is "three hundred twelve million, four hundred one thousand, one hundred forty-three".